# A149341 (b-file synthesized from sequence entry)
0 1
1 1
2 4
3 12
4 41
5 150
6 568
7 2173
8 8481
9 33756
10 135463
11 547375
12 2233624
13 9174167
14 37848374
15 156914675
16 653597162
17 2731737145
18 11452844102
19 48166309663
20 203115207619
21 858494466299
22 3636552361349
23 15436162344558
24 65641966321937
25 279610928461517
26 1192948785566952
27 5097192013993835